Visqueen Low Permeability Gas Membrane

Visqueen SKU: 102776
Visqueen Low Permeability Gas Membrane - HomeFix
Visqueen Low Permeability Gas Membrane high performance radon membrane
Visqueen Low Permeability Gas Membrane high performance radon membrane install

Visqueen Low Permeability Gas Membrane

Visqueen SKU: 102776
£249.99(inc VAT) Regular price
(inc VAT) /

Pre-Order Item – Up to 10 Working Days

Visqueen Low Permeability Gas Membrane is a robust co-polymer thermoplastic membrane approved for use in NHBC Amber 1 and radon applications.

Price Includes VAT

Visqueen Low Permeability Gas Membrane

Visqueen Low Permeability Gas Membrane

  • Approved for use in NHBC Amber 1
  • High quality robust co-polymer thermoplastic membrane
  • Supplied in centre folded sheeting which reduces the risk of cracks in screed
  • A high-performance radon membrane
  • BBA Certificate 13/5069 and CE Mark 13967:2012

Available in 4m x 12.5m (50m2) 

For further Visqueen Low Perm gas membrane guidance contact HomeFix.

For ease of identification on-site, the membrane is coloured yellow. The membrane is flexible, easy to install and supplied in a 4m x 12.5m roll.

The membrane is manufactured as a centre folded product to limit creases which aids jointing and welding applications on site. Centre Folded films can also help to reduce cracks found in structural concrete screeds where traditional multi-folded DPMs are used.

How to use/install the Visqueen Low Permeability Gas Membrane

  1. Visqueen Low Permeability Gas Membrane should be installed on a smooth continuous surface free from irregularities such as voids or protrusions e.g. grouted beam and block floor.
  2. In radon applications, the membrane should be installed on a smooth continuous surface or a compacted blinding layer e.g. 50mm thick sand blinding, or smooth concrete blinding. The substrate should be free from irregularities such as voids or protrusions.
  3. The membrane can be cut with a sharp retractable safety knife or robust scissors.
  4. Visqueen Low Permeability Gas Membrane should be loose laid on the substrate. The membrane should be clean and dry at the time of jointing. It should be overlapped by at least 150mm, bonded with Visqueen Pro Double Sided Jointing Tape and sealed with Visqueen Foil Lap Tape. In demanding site conditions seal lap joints with Visqueen Ultimate GR Lap Tape.
  5. Alternatively, lap joints can be heat welded to achieve an effective seal. Welded lap joints can be less than 150mm provided the joint integrity is not compromised.
  6. Airtight seals should be formed around all service entry points. Visqueen Preformed Top Hat Units should be used for sealing service entry pipes. The base of the top hat and the upstand should be bonded using Visqueen Pro Double Sided Jointing Tape and sealed with Visqueen Foil Lap Tape. The upstand should be secured with the supplied jubilee clip.
  7. Forming an effective barrier to gases may give rise to complex three-dimensional detailing where it is recommended Visqueen Preformed Units are used e.g. corners. Alternatively, Visqueen Pro Detailing Strip can be used to seal awkward junctions.
  8. If the membrane is punctured or perforated a patch of the same material should be lapped at least 150mm beyond the limits of the puncture and bonded with Visqueen Pro Double Sided Jointing Tape and sealed with Visqueen Foil Lap Tape. Alternatively, a patch can be formed using Visqueen Pro Detailing Strip and lapped at least 150mm beyond the extents of the puncture.
  9. The membrane should be covered by a protective layer as soon as possible after installation to prevent damage e.g. from following trades. Care should be taken to ensure that the membrane is not punctured, stretched or displaced when applying a screed or final floor covering. A minimum thickness of 50mm screed is recommended. When reinforced concrete is to be laid over the membrane the wire reinforcements and spacers must be prevented from puncturing the membrane. Where there is a high risk of potential damage, the membrane should be covered with Visqueen TreadGuard protection, screed, or other approved protection material before positioning the reinforcement.

Low Permeable Gas Membrane Data Sheet

MSDS Visqueen Polyethylene Membrane Products

Installation - Step by step guide

Visqueen Gas Brochure

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